<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Globe - ECHARTS-GL</title>
    <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
    <meta name="apple-mobile-web-app-capable" content="yes"> <!-- Fullscreen Landscape on iOS -->
    <link rel="stylesheet" href="./common.css">
</head>
<body>
<div id="main"></div>
<script src="../node_modules/echarts/dist/echarts.js"></script>
<script src="../dist/echarts-gl.js"></script>
<script src="lib/jquery.min.js"></script>
<script src="js/exportGL2OBJ.js"></script>
<script src="lib/download.js"></script>
<script src="js/commonUI.js"></script>
<script>
    var chart = echarts.init(document.getElementById('main'));

    // http://visibleearth.nasa.gov/view_cat.php?categoryID=1484
    chart.setOption({
        toolbox: {
            feature: {
                myExportObj: {
                    title: 'Export OBJ',
                    icon: 'M4.7,22.9L29.3,45.5L54.7,23.4M4.6,43.6L4.6,58L53.8,58L53.8,43.6M29.2,45.1L29.2,0',
                    onclick: function () {
                        var res = echarts.exportGL2OBJ(chart, {
                            mainType: 'globe',
                            index: 0
                        }, {
                            mtllib: 'globe'
                        });
                        download(res.obj, 'globe.obj', 'text/plain');
                        download(res.mtl, 'globe.mtl', 'text/plain');
                        res.textures.forEach(function (texture) {
                            download(texture.data, texture.file, 'image/png');
                        });
                    }
                }
            }
        },
        globe: {

            baseTexture: 'asset/world.topo.bathy.200401.jpg',
            heightTexture: 'asset/elev_bump_4k.jpg',
            // heightTexture: 'asset/bathymetry_bw_composite_4k.jpg',

            displacementScale: 0.05,
            displacementQuality: 'high',

            shading: 'realistic',
            realisticMaterial: {
                roughness: 0.8,
                metalness: 0
            },

            postEffect: {
                enable: true
            },
            temporalSuperSampling: {
                enable: true
            },
            light: {
                ambient: {
                    intensity: 0
                },
                main: {
                    intensity: 6,
                    shadow: true
                },
                ambientCubemap: {
                    texture: 'asset/pisa.hdr',
                    exposure: 2,
                    diffuseIntensity: 0.1,
                    specularIntensity: 1
                }
            },
            viewControl: {
                zoomSensitivity: 0,
                // autoRotate: false
            }
        },
        series: []
    });

    window.addEventListener('resize', function () {
        chart.resize();
    });

</script>
</body>
</html>
